Improvement in lock-nut



inibed 51am @met '(tiijliw.

W. P. EWING ANDis'AAc s. DE FORD, oFnLKToN, MARYLAND.

Letters Patent No. 94,585, dated September 7, 1869.

IMPROVEMENT IN LOCK-NUT.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern l Be it known that we, YV. P. EWING and ISAAC S.

DE FORD', of Elkton, in the county of Cecil, sindv State Figure 2 is a longitudinal section, as indicated bythe line x-x of fig. 1.

Like letters, in both figures of the drawings, indicate like parts.

The nature of' our invention consists in locking screw-nuts to bolts, so as to prevent their turning or becoming loose thereon, by means of a Spanner, hav'- iug jaws with Abevelled edges iu combination with screw-nuts having similar edges.

lVe construct our invention as follows:

4 A and B represent two bars oi' rails, united by the plates a and b, above and below, or on either side thereof, bolts() and D being passed through the plates a and b and rails A and B, withlhcads or caps c and (l and screw-nuts E and F, to fasten the plates, the said screwuiuts having their edges bevelled inwardly.

G is the Spanner, having a jaw, e, at one end, and another, g, on the side next to the opposite end, the

edges of both jaws being bevelled, to correspolul with those of the nuts.

Thusto lock .the nuts, one of them is turned cornerwise-and thespanner slipped on to it, (see red lines, fig. 1.) '.lhe Spanner is then turned and made to embrace the opposite nut, at the same time bringing the first nut squarely around with the other.

This mode of locking the nut-s will be found to be of great advantage in railroad, or other machinery where a lock-nut can be used, particularly in connecting the ends of the rails of a railroad, by means of what is known as the sh-joint, the Spanner rendering it impossible for the nuts to turn or become loose on the bolts.

Claim.

Having thus fully described our invention,

\Vhat we claim therein us new, and desire to secure by Letters Patent, is-' `The spanner G, with jaws e and g, having bevelled edges, in combination with the screw-nuts E and F, having similar edges, substantially as described.

W. P. EWING;

ISAAC DE FORD.

Witnesses NOBLE T. BInDLn, E. WESLEY JANNEY. 

